Finding the Fourth Proportional to 12,276.96, 18,411.96 and 3,509.52

Step by Step Solution

1. Step 1: Write the proportion equation
   12,276.96 : 18,411.96 = 3,509.52 : x
2. Step 2: Convert to fraction form
   12,276.96/18,411.96 = 3,509.52/x
3. Step 3: Cross multiply
   12,276.96x = 18,411.96 × 3,509.52
4. Step 4: Simplify right side
   12,276.96x = 64,617,141.86
5. Step 5: Solve for x
   x = 64,617,141.86/12,276.96
6. Step 6: Final answer
   x = 5,263.29